Theresa May statement after EU Brexit talks

The transcript discusses the challenges of negotiations, focusing on two main issues: the economic relationship with the EU and the implications for Northern Ireland. Two options are presented for the UK's economic future post-EU exit, both of which have significant drawbacks. The first option involves remaining in the European Economic Area, which would limit the UK's ability to make independent trade deals. The second option suggests a basic free trade agreement, which could lead to a customs border in the Irish Sea, a proposal already rejected by Parliament. The speaker emphasizes the importance of respecting Northern Ireland's status within the UK, as outlined in the Belfast Good Friday Agreement.

What principle is mentioned in relation to Northern Ireland's status within the UK?

What is the speaker's stance on creating a customs border between Northern Ireland and the rest of the UK?